Back connecting-rod wrench for ford machines



LMQZW Dealfi; 1922.

' DLF. BRATTON.

BAcK CONNECTING Ron WRENCH I 'FLLEP APR. H

Q- Q m. W

FOR Form MACHINES. 192lv 2 SHEETS-SHEET I D. F. BRATTON.

BAcK- Coxuzcnus Ron WRENCH FOR Fons MACHINES.

Fur-:0 APR. 1 I 1921 2 SHEETS'SHEET 2 to Ni ii. l

DELIBERT BEATTOl-T, OF

JOENSONVILLE, ILLINOIS.

BACK CONNECTING-R033 W'BENCH FOR FORD TILACHINES.

Application filed April 11 To HZ 4.1T]! cm 27; m (42 course m e it known that l. Dill" tiaen oi? the United St .ces, residing nsonville, in the county of lVayne and State ot Illinois, have invented certain new and useful lmprovements in a Back Connectingied Wrench tor Ford ll lachines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The object of the invention is to provide a simple and convenient tool for tightening the back connecting rods of automobiles of the Ford. type, which rods are inaccessible to the ordinary wrench and involve difficulty in the tightening thereof which requires the operator to resort to numerous inconvenient enpedients or else leave the rods in a loose condition until the aid of a machinist can be secured; and with this object in view the invention consists in a device of which a preferred embodiment is illustrated in the accompanying drawings, wherein:

Figure 1 is a plan view of a wrench designed especially for the tightening of back connecting rods.

Figure 2 is a side view of the same.

Figure 3 is a sectional view showing one oi: the latches in engaging relation with a pawl to provi do For the rotation oi the socket in one direction.

5 Figure 4 is a. detail View of a detachable an d interchangeable wrench head adapted to be used. in connection with the tool.

Figure 5 is a view of a modified form of: wrench head and ratchet socket wherein the shank of the former is round instead of angular or irregular as shown in Figures 1 to 4 inclusive.

Figure 6 is a plan view, and

Figure 7 is a side view of a modified form of wrench showing different means for looking the pawls alternately in their inoperative positions.

Figure 8 is a transverse sectional view taken in the plane of the looking ring.

Figure 9 is a detail view of the locking ring, detached.

The wrench consists essentially of a shank 10 having an ofiset handle 11, the body portion of the handle being disposed in sub stantial parallelism with the shank and connected therewith by an obliquely dis- 1921. Serial No. 469,298.

posed offset 12 which affords the required leverage in the manipulation of the connectingrods without obstructive contact with adjacent portions of the machine frame, and in a bearing 13 in the end of the shank which is bifurcated as shown is mounted a ratchet socket 14L having an angular or cross sectionally irregular seat 15 for the reception of the stem 16 of a head 17 having any suit able form and size of nut engaging seat or socket, the head being interchangeable to adapt it to it any desired size of nut or bolt head.

The teeth of the ratchet are of the square shouldered form for engagement by either of a pair of dogs 18 pivotally mounted as at 19 in the bifurcation oi the shank for terminal engagement alternately with the teeth of the ratchet and yieldingly held in engaging position by springs 19. Also in connection with the dogs are latches 2O slidingly mounted in suitable guides 20 on the shank for engagement with the rear or tail portions of the dogs to provide for holding one or the other thereof out of engagement with the ratchet to permit of the latter being rotated in the opposite direction.

in the modified construction illustrated in Figure 5 the head 22 is provided with a round shank 23 for engaging the round seat 24: in the ratchet member 25, a pin 26 being employed to prevent independent rotation thereof.

In the modified form shown in Figures 6 to 9 inclusive the means for securing one of the dogs 27 out of engaging relation with the ratchet 28 consists of a ring 29 revolubly mounted. upon the shank 30 and having an internally oamataced car 31 adapted to be brought into operative relation with the inner or tail end of the dog to be retracted. Obviously the reversal of the wrench, to adapt it to be used to turn either a right hand or a left hand nut or bolt may be eii'ecteol simply by turning the ring through a half revolution.

By reference to Figure t it will be seen that the socket head 17 is removably secured to the ratchet socket 14 by means of a spring pressed ball ratchet 16 carried by the stem 16 and engaging in a depression 16 in the wall of the seat 15 of the ratchet socket 14.

Having thus described the invention, what I claim is A tool of the class described having a shank, a ratchet head journaled thereon,

awls to en a e and disenf as e said head 29 1: ("l ,5

pivoted on shank, saidshank having a tongue disposed intermediate sald pawls, leaf springs hav ng straight armsengaglng opposlte sides or said shank, longitudinally curved portions returned troin sald arms,

said pawls having extremities overlapping one end of said springs and walls engaged by and corresponding to the curvature (3r said returned portions whereby the springs will urge the pawls at one end into engagement with the head and are held against displacing movement toward said head with 

